Multi-tuner radio systems and methods

ABSTRACT

A system, apparatus, method, and media directed to navigation in the field of digital radio systems are provided. For example, an apparatus, method, or medium can be implemented to provide a multi-tuner portable digital radio device that includes multiple modes and/or advances navigation tools.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No. 12/348,765 filed Jan. 5, 2009, which claims the benefit of U.S. provisional application No. 61/019,094 filed Jan. 4, 2008, which are incorporated in their entirety by reference as if fully set forth herein.

This application is related to multi-tuner radio systems and methods such as those described in U.S. Pat. No. 7,171,174, U.S. Pat. No. 7,343,141, U.S. patent application Ser. No. 12/033,616, and U.S. patent application Ser. No. 11/609,512, which are hereby explicitly incorporated by reference herein in their entirety such as with respect to specific implementations of such systems and methods.

BACKGROUND

Systems and methods of the invention are directed in general to digital radio systems, and more specifically related to multi-tuner digital radio systems such as radio navigation systems.

Advanced features and tools are needed in the field of digital radios to enhance the user experience and to advance the technology. Tools and features that can increase the radio device's usability and “stickiness” are generally desired. Existing known systems are deficient in providing sufficient features such as in the field of navigation.

BRIEF DESCRIPTION OF THE DRAWINGS

Features of embodiments of the invention, its nature, and various advantages will be apparent from the following detailed description, taken in conjunction with the accompanying drawings in which:

FIG. 1 illustrates a faceplate of a radio system in accordance with an embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 illustrates the faceplate of a 3D Radio aftermarket car stereo system. This is an illustrative implementation, and other implementations are possible within the spirit of this invention. The look and feel may be altered, the names of the buttons may be changed, buttons may be added or removed, and other suitable alterations may be made. In addition, similar features may be used in products designed for other environments, such as home audio systems and portable music devices.

With further reference to FIG. 1, the illustrated 3D Radio device supports six preset radio stations, generally designated by reference numeral 104. In one embodiment, user can set the radio stations to his/her favorite radio channels. Preferably, a plurality of preset radio stations can be supported. Radio system 100 can support at least six radio tuners, with one tuner devoted to each preset station. In one embodiment, radio system 100 may include eight radio tuners, one radio tuner corresponding to each of the 6 preset radio stations, one radio tuner to allow a station other than one of the favorite radio stations to be received at the same time as all of the presets, and one spare radio tuner to keep track of the most recently tuned station in order to allow continuous reception of that particular station.

The radio tuners can receive radio signals using a plurality of supported technology. These may include AM, FM, HD, satellite, or Internet (e.g., using Wi-Fi).

The device 100 can include adequate memory to buffer a predetermined amount of digitized and compressed audio for the received stations. For example, to be able to buffer one hour of audio from each of the eight stations, the device may include one-half gigabyte of internal memory. The device may include additional memory. For example, the device may include a total of one gigabyte of internal memory to allow one hour of storage per station plus an additional eight hours of storage for saved songs and other audio content. Memory may include memory chips or cartridges, (e.g., RAM, dynamic RAM, static RAM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), flash memory, and other memory chips or cartridges), and any other medium to which a computer can write and from which a computer can read (such as a disk drive or memory stick).

The device can include one or more processors, such as digital signal processors, and other circuits to compress the received audio information digitally and store it into the memory. The audio data may be stored, for example, in the MP3 format. The processor can perform other tasks, such as controlling the audio output of the device and managing the user inputs and outputs.

In the present embodiment, the 3D Radio device 100 can continuously receive, compress, and store audio data from the eight tuners (e.g., each of the tuners) (six presets, current station, and previous station) into the memory device. The processor can continue to monitor the status of the memory device. When an hour of audio programming is available from any stored audio data, the oldest audio data may be overwritten, so that the most recent radio programming from the station is always available for listening.

The 3D Radio may support connections to several external devices, for example:

-   -   Music CD, CD ROM or DVD     -   Flash drive over the USB port     -   Flash memory SD-CARD device     -   Mobile phone using Bluetooth or other wireless connection

In accordance with one or more embodiments, a radio device able to receive multiple radio stations simultaneously (which is sometimes referred to herein as 3D Radio device) having different operational modes can be provided as illustrated by the examples below. The 3D Radio device may be in any of several operational modes. For example:

-   -   Off. This is when the device is turned off, e.g., with the power         button, or when the car has been turned off. All tuners continue         to receive radio programming and the device continues to         compress and store the received audio in its memory, but the         display is turned off and the audio output ceases.     -   On, normal radio play. When the device is turned on, the 3D         Radio outputs audio from one of the radio stations. To play         back, the audio is retrieved from memory, decompressed,         converted to analog, and output. The audio may be played back         immediately after it is compressed and stored, or it may be         delayed by any amount of time up to the size of the audio memory         buffer. In the example shown, the playback point may be at real         time or may be delayed by any amount up to an hour.     -   On, radio paused. When the radio output is paused, the audio         output is muted, and the storage of new audio data continues.     -   Saving radio. While playing radio or while 3D Radio is paused,         the incoming audio data may be stored to a more permanent memory         location, so that it will not be overwritten as the buffer         fills. The radio station selected for output may be in saving         mode, and one or more of the other stations not currently         selected may also be in saving mode.     -   Saved content playback. In this mode, audio continues to be         stored from all tuners. However, the output audio is taken from         a stored audio file rather than from one of the radio content         buffers. This stored content may be something that was         previously received as radio programming, it may be something         stored on a connected device such as a CD or flash memory card,         or it may be any item of audio content that has been transferred         from such a device to internal memory.     -   Playback of stored content paused. In this mode, audio playback         from a stored content item has been temporarily stopped.         Preferably, the content is retrieved from the internal memory of         the device 100. Alternatively, it may have been retrieved from a         connected device.     -   Phone. In the phone mode, the 3D Radio's microphone and speakers         are used to support a phone call on a connected device (such as         a Bluetooth mobile phone). Storage of audio data from all tuners         continues, but playback has been paused.     -   Overlay. During any of these modes, a user feature may be         initiated that requires using the display and buttons, but         allows the audio to continue. In these cases, storage of radio         programming continues on all stations, and playback of radio or         stored content continues as begun prior to the overlay.

Each of the unselected radio station presets is in one of three modes:

-   -   Disabled. Before the user has programmed a preset, the         associated tuner is disabled and no content is stored.     -   Normal. The playback point progresses along with the record         point. The delay between the two remains the same as it was when         the station was last selected for output.     -   Paused. The playback point does not progress. The delay between         the playback point and the record point increases as additional         content is buffered.

In accordance with one or more embodiments, a display can be provided as illustrated by the examples below. For example, a three-line LCD display, as shown, allows a variety of information to be presented to the user, depending on the mode. In general, the first line of the display contains information about the mode and source, while the second and third line contain more specific information about an item of audio content being played. For example:

-   -   In off mode, the display is blank.     -   When playing radio:         -   Line 1 includes:             -   The station preset number             -   The station frequency (if appropriate for the type of                 source) or channel number             -   The station call letters or name             -   A play icon to indicate play mode             -   A count of the time delay between the playback point and                 the record point for this station, in mm:ss format. This                 count does not change while playing back radio             -   If in save mode, the save icon is also displayed         -   Line 2 includes:             -   A thumbs-up icon if the artist of the item currently                 being played back has been designated as a favorite             -   A thumbs-down icon if the artist has been designated as                 a dislike             -   The name of the artist (if available)             -   May be the category of item (such as traffic, news,                 etc.)             -   May be the name of a radio show             -   For a commercial, may include the first of two lines of                 information about the product or service         -   Line 3 includes:             -   A thumbs-up icon if the item currently being played back                 has been designated as a favorite             -   A thumbs-down icon if the item has been designated as a                 dislike             -   The name of the item, or the second line of the name (if                 available)             -   For a commercial, may be the second line of information                 about the product or service             -   May present a call to action, such as “Press the phone                 button to buy tickets”     -   When radio is paused, the display is the same, except:         -   The pause icon is displayed instead of the play icon         -   The playback delay count increments every second     -   When playing back a saved item, the display is similar to the         playback of radio programming, except:         -   The information about the radio station (present, frequency,             station name) is replaced with information about the source             (saved, CD, USB, etc.)         -   Time displayed is the playback offset from the start of the             item, and increments every second     -   When playback of a stored item is paused, the display is the         same except:         -   The pause icon is displayed instead of play         -   The playback offset does not change     -   In phone mode, the display shows:         -   Line 1 is phone icon and the phone number         -   Line 2 is the caller ID information, if available         -   Line 3 may show the connect time (minutes and seconds)     -   When in overlay mode, the display contents depend on the feature

In accordance with one or more embodiments, mode and display changes can be provided as illustrated by the examples below. The following events can cause mode and display changes:

-   -   If a content item ends during normal radio play, the display is         updated with any new information and normal play continues.     -   While in the radio pause mode, if the delay between the playback         point and the record point reaches the size of the buffer, the         3D Radio resumes normal radio play mode, updating the display         and commencing audio output at the maximum delay position.     -   If an unselected preset is in pause mode and reaches its maximum         delay, the preset returns to normal mode, and the delay value         for that station is set to zero.     -   If an unselected preset has a non-zero delay and it remains         unselected for a time exceeding the size of the buffer, the         delay is reset to zero.     -   If the playback of a saved item reaches the end of that item,         the 3D Radio checks to see if there is another item stored in         the same location, and begins playback of the next sequential         item. After reaching the end of the last item in the location,         the 3D Radio enters pause mode on playback of that item.     -   If information about a call-in opportunity is received in the         radio signal while in normal radio mode and the playback delay         is less than 30 seconds, the call-in information is displayed         and will be used if the user presses the phone button.     -   If a phone call ends (either because the user hangs up or         because the call was disconnected from the other end), the 3D         Radio resumes the playback of the radio station or saved item         that was interrupted by the call, using the playback point at         the time of the commencement of the call.     -   If a content item ends (in the record stream) while in save         mode, the 3D Radio completes writing the item to memory, and         removes the save icon from the display. Playback continues         without interruption.

In accordance with one or more embodiments, certain interactivity can be provided as illustrated by the examples below. The 3D Radio can respond to button presses, for example, as follows:

-   -   Power.         -   If the device is off, turn on. Return to the most recent             pause or play mode, either for the most recently selected             radio station or for the most recently interrupted playback             of a saved content item. Enable audio output and update the             display appropriately.         -   If the device is on, turn it off. Blank the display and             disable the audio output. If in phone mode, exit. If in             overlay mode, exit. Remember the current radio or saved             content play/pause mode and delay or playback offset.         -   While in off mode, all buttons other than the power button             may be ignored.     -   Volume Up or Volume Down. Adjust the volume. This option is not         active while audio is paused. The device may maintain separate         volume levels for radio play, saved item playback (if desired,         with different levels for playback from different sources), and         phone. The volume level may be briefly displayed on line 3 of         the display, temporarily replacing any other text.     -   Play/pause.         -   If in play mode for radio or saved content, enter pause             mode. If in pause mode enter play mode. Turn off/on audio             and update the display.         -   If in save mode, toggles between pause and play, but does             not affect saving of content item.         -   This button is ignored in phone mode.         -   If in overlay mode, operation of this button depends on the             specific function:             -   If in the search feature, the current playback of radio                 or any saved content item is paused, the search feature                 is exited, and playback of the selected item commences                 at its beginning The display is updated to reflect                 playback of the selected saved or radio item.             -   If the play/pause button is pressed while other features                 are used in overlay mode, the current playback of radio                 or saved content pauses or resumes without updating the                 display.     -   Number keys (1-6):         -   Six keys are shown in this example, but any suitable number             of presets may be supported.         -   While listening to radio, pressing and holding a number key             for at least two seconds programs the button for the             currently tuned station. The tuner associated with the             specific preset is programmed to receive the station. Any             buffered audio data stored for the station may be copied             into buffer memory associated with the preset. Storing of             audio data for the station into that buffer begins. In some             implementations, tuners are not preassigned to preset             numbers, but rather are assigned when the user programs the             preset. In these implementations, the tuner may not need to             be reprogrammed and the audio data may not need to be             copied.         -   Pressing a number key briefly will enter radio mode (if not             already in radio mode), and either resume playback or pause             state for the selected station. In some implementations,             selecting a station that is paused will cause it to enter             play mode at the previous delay offset. The display and             audio output will be set as appropriate. If one of these             buttons is pressed while in playback mode for a saved             content item, that item may be paused, so that playback of             that item can be resumed at the same point at a later time.             This does not affect save mode.         -   If in phone mode, these buttons may be ignored, or the             number may be used to access telephone features.         -   If in overlay mode, the function of these keys may depend on             the specific feature:             -   In the search feature, pressing a number key may change                 the search category to show content items in the buffer                 for the indicated radio station, and select the most                 recent content item in that buffer for display.     -   Way Back:         -   In radio mode (pause or playback), sets the playback delay             to the size of the buffer for the currently selected station             and enters play mode. The display and audio output are             updated appropriately.         -   Does not affect save mode.         -   In playback or pause mode for a saved item, restarts             playback of the selected content item.         -   Ignored in phone mode.         -   For overlay modes:             -   In search, updates the display to the earliest or first                 content item in the selected search category.     -   Now:         -   In radio mode (pause or playback), sets the playback delay             to zero for the currently selected station and enters play             mode. The display and audio output are updated             appropriately.         -   Does not affect save mode.         -   In playback or pause mode for a saved item, this button is             ignored.         -   Ignored in phone mode.         -   For overlay modes:             -   In search, updates the display to the latest or last                 content item in the selected search category.     -   Instant Replay:         -   In radio pause mode, enters play mode and performs instant             replay function.         -   In radio play mode, skip back to the start of the song or             commercial, if one is currently being played and its start             can be identified (if less than one second from start of             item, skip back to start of previous item). If not a song or             commercial, skip back 15 seconds. Skip back to start of             buffer if there is less that 15 seconds available. Does not             affect save mode. Start playback at the new offset.         -   In recorded item playback or pause mode, skip back playback             point by 15 seconds (or to start of item if less than 15             seconds from start) and start playback mode from that point.         -   Ignored in phone mode.         -   In overlay mode:             -   Search:                 -   Selects previous item in search category and updates                     display.     -   Skip Forward:         -   In radio pause mode, enters play mode and performs skip             forward function.         -   In radio play mode, skip to the end of the song or             commercial, if one is currently being played and its end can             be identified. If not a song or commercial, skip forward by             30 seconds. Set delay to zero if it is less than 30 seconds.             Does not affect save mode. Start playback at the new offset.         -   In recorded item playback or pause mode, skip forward of             playback point by 30 seconds and start playback mode from             that point. Ignored if less than 30 seconds from end of             item.         -   Ignored in phone mode.         -   In overlay mode:             -   Search:                 -   Selects next item in search category and updates                     display.     -   Save:         -   If in radio play or pause mode, and the current playback             point is in a song, show, or other content item that has             already ended broadcast (playback delay is greater than the             length of the item), copy the entire item from the station             buffer to permanent storage and add title/track information,             along with information about station and broadcast time.         -   If the item is still in progress, copy the portion of the             item that has completed and enter save mode.         -   If in saved item playback mode or pause mode for an item in             internal memory, this button is ignored unless a flash             memory device is attached, in which case the item is copied             to that device.         -   If in playback or pause mode for an item on CD or external             flash memory device, copy the item to local memory and store             whatever information is available.         -   Ignored in phone mode. In some implementations, 3D Radio may             save a recording of the phone conversation to internal             memory.         -   If in search feature:             -   If currently displayed title is in a radio station                 buffer, copy the item (if complete), or copy the portion                 that is complete and enter save mode for that station.             -   If currently displayed title is on CD or flash memory,                 copy it to internal memory.             -   If currently displayed title is in internal memory, copy                 the item to flash memory if attached, or ignore this key                 if no external memory device is available.     -   Delete:         -   Ignored if not in play/pause mode for a saved item in             internal memory or search mode with such an item displayed.             Deletes the indicated item from internal memory. In search             mode, displays next item in category list, or top of next             category list if category list becomes empty. If pressed             while playing back or paused for a saved content item,             enters pause mode once item has been deleted.     -   Search:         -   Ignored in phone mode.         -   If in pause or play mode for radio or saved item, enters             search mode. Playback remains the same, but display enters             overlay mode with search data. First non-empty search             category from the following list is displayed:             -   Saved—all saved content items in internal memory, sorted                 by date/time saved. First line of display: Search icon,                 save icon, followed by text “Saved content”.             -   Favorites—all content items marked as favorites, whether                 available in radio station buffers or saved content                 memory. Sorted by start time for content on radio                 stations, followed by saved content sorted by date/time                 saved. First line of display: Search icon, favorite                 icon, followed by text “Favorites”.             -   1-6—One category for each preset. Includes all content                 available in the station's buffer, sorted by broadcast                 time (item currently being broadcast is first, next most                 recent is second, etc.) First line of display: Search                 icon, present number, station frequency or channel                 number, and station name/call letters.             -   One category for each currently available external                 memory device (CD, USB flash drive, SD memory device),                 with items sorted as stored on the device. Track names                 displayed if available. First line of display: Search                 icon, the name of the device (e.g., “CD”), and the name                 of the album if available.             -   Additional specific categories may be available, such as                 “Traffic” or “Weather”, in which case all content with a                 matching category in any radio station buffer is                 included, sorted newest to oldest. First line: Search                 icon, followed by name of category.             -   Other categories may be created dynamically based on                 availability. For example, if several songs by the same                 artist or from the same album have been stored, they may                 be grouped under a search category with that name.         -   Display is configured as follows:             -   Line one is the Search icon, followed by the specific                 name and/or icon associated with the category.             -   Lines two and three are the specific information related                 to the content item (e.g., artist and track name).         -   If Search button is pressed while in search feature, the             next non-empty search category is selected, the first item             in that category is found, and the display is updated.         -   If the last Search category is already displayed when the             Search button is pressed, the Search feature is exited and             the display is updated based on the underlying play or pause             mode.         -   Search mode times out if there is no user input within two             minutes.     -   Thumbs Up:         -   In pause or play mode for radio or a saved item, or while in             search mode, toggles the favorite status for the selected             item. If already thumbs up, in some implementations this may             toggle the favorite setting to remove the thumbs-up icon for             the item, while in other implementations the thumbs up             button may be ignored if selected for an item that has             already been marked as favorite. If marked as thumbs down,             changes it to thumbs up. If neither, set it to thumbs up.             Updates the display. Stores the new setting in memory so             that matching content will be recognized as a favorite when             it is seen later. In some implementations, multiple levels             of preference may be specified, for example, zero to four             thumbs up.         -   Ignored in phone mode. In some implementations, may add the             phone number to a phone book.     -   Thumbs Down:         -   In pause or play mode for radio or a saved item, or while in             search mode, toggles the dislike status for the selected             item. If already thumbs down, in some implementations this             may toggle the dislike setting to remove the thumbs-down             icon for the item, while in other implementations the thumbs             down button may be ignored if selected for an item that has             already been marked as disliked. If marked as thumbs up,             changes it to thumbs down. If neither, set it to thumbs             down. Updates the display. Stores the new setting in memory             so that matching content will be recognized as a dislike             when it is seen later. In some implementations, multiple             levels of dislike may be specified, for example, zero to             four thumbs down.         -   Ignored in phone mode.     -   Phone:         -   If in radio or saved content play mode, pauses the playback         -   If there is an incoming call, answers the call             -   Caller ID should already be displayed             -   Connect time can also be displayed for the duration of                 the call         -   If the currently playing audio has embedded phone             information, initiates a call to the indicated phone number.             -   Shows caller ID and associated information on display             -   Shows string “Dialing” until there is an answer, and                 then display connect time.             -   May include an automatic redial number for busy signal         -   If there is no phone number in the radio signal, allow the             user to specify the number or phone book entry             -   Supports voice recognition and dialing             -   Allows use of phone keyboard             -   Some implementations of 3D Radio may include all digits                 0-9, and the 3D Radio buttons can be used to dial             -   Display is updated while dialing and during call         -   During a call:             -   Hangs up the call             -   Resumes playback mode for radio or saved content most                 recently selected     -   Source:         -   Selects the spare (e.g., seventh) tuner if not already             selected         -   Displays and selects one of the available audio sources.         -   Pressing this button multiple times will toggle through the             available sources. The first press does not change sources,             just displays the name of the currently selected source.         -   If on the last source, cycles back to the first.         -   Clears the audio buffer for the station each time the source             changes.         -   Supported sources may include:             -   AM             -   FM             -   HD             -   Satellite             -   Internet             -   Saved             -   CD (only shown if a CD is inserted)             -   Flash (only shown if a flash memory device is connected)         -   Selecting Saved, CD, or Flash does not require selecting and             changing the tuner or clearing the audio buffer. Instead, it             enters saved content playback mode for that device.         -   Display of source name times out after five seconds, or when             the user presses any other button.     -   Tune Up/Down:         -   Selects the spare (e.g., seventh) tuner if not already             selected         -   Adjusts the frequency if appropriate for the type of source             (e.g., AM or FM radio).         -   Increments the channel number if appropriate for the type of             source (e.g., Internet or Satellite radio).         -   Displays the frequency or channel number and the channel             name if available.         -   If on the highest (lowest) frequency/channel, cycles to             lowest/highest.         -   Clears the audio buffer for the station each time the             frequency/channel changes.         -   Tuning up and down while the Saved, CD, or Flash source is             selected jumps between tracks stored on that source (does             not affect a tuner or clear any buffer).         -   While in the search feature, these buttons may be used to             select the next/previous content item in the selected             category.     -   Scan:         -   Enters or exits scan mode         -   During scan mode, the word “Scan” is added to the first line             of the display.         -   Upon entering scan mode, all tuners are allocated to the             scan feature         -   Each is tuned to the next consecutive available station on             the currently selected source. For example, eight tuners are             tuned to the eight stations on the selected source at the             lowest frequencies. The first is selected for output.         -   Every five seconds, the next tuner is selected and the one             just deselected is tuned to the next available source. In             some implementations, the tuner reassigned may be the one             prior to the one just deselected, to allow the user to go             back to that station and maintain its audio buffer.         -   When the user exits scan mode, there will be, for example,             40 seconds of stored audio available to skip back and listen             to.         -   Pressing the Play/pause button while scan is active pauses             or resumes the scan (not the audio) and allows the user to             listen to the current selection for longer. Scan pause mode             may time out automatically to normal radio play mode if the             user does not resume scan within one minute.         -   Skip Forward while scan is active immediately advances the             scan to the next station.         -   Instant Replay while scan is active returns to the previous             station in the scan, and puts the scan (but not the audio)             into pause mode.     -   3DR:         -   Allows the user to enable the “My 3DR” feature.         -   Personalized “radio station”         -   The text “My 3DR” is pre-pended to the first line of the             display, along with information about the source of the             content being played.         -   Content is automatically selected from all available content             sources. As each item ends, the next item is automatically             selected and played, regardless of source.         -   Radio content from all active presets is used, based on             previous user Favorite selections         -   Preference is given to older content that will be             overwritten sooner         -   Saved content is also used, on a “shuffle” basis         -   May be filled with radio content that is similar to that             marked as favorites (e.g., same artist, link via a “similar             to” database)         -   May be further extended by content that has not been marked             either favorite or dislike         -   All audio navigation features (Way Back, Instant Replay,             Skip Forward, Now, Play/pause) are available while in the My             3DR feature.     -   Audio (not shown):         -   Enters overlay mode to allow the user to adjust various             audio settings, while continuing to play radio or saved             content. Pressing the Audio button multiple times may toggle             between different adjustment features, such as bass, treble,             balance, selecting equalizer settings, etc. While in the             audio adjust feature, the other buttons may be repurposed.             The Volume Up/Down or Tune Up/Down buttons may be used to             increase and decrease various settings dynamically. The             number keys may be used, for example, to select from             multiple equalizer presets. The display is used to guide the             user through the settings. Pressing the Audio button while             the final audio setting is displayed may exit the audio             adjustment feature. The overlay mode display times out if             there is no user input for one minute.     -   Previous Station (not shown):         -   Pressing this button will enter radio mode (if not already             in radio mode), and either resume playback or pause state             for the most recently tuned station. This may involve             selecting one of the six preset tuners, or it may involve             selecting the spare tuner if the most recent station isn't a             preset. If possible, this function is always performed by             selecting a previously tuned tuner rather than by changing a             tuner setting, to allow the user the option of reviewing             past audio on the station. The display and audio output will             be set as appropriate. If in playback mode for a saved             content item, that item may be paused, so that playback of             that item can be resumed at the same point at a later time.             This does not affect save mode. In some implementations,             pressing the Previous button may allow the user to resume             playback of a previously played saved item.         -   If in phone mode, this button may be ignored.         -   If in overlay mode, the function of this key may depend on             the specific feature.     -   Setup/Menu (not shown):         -   Enters overlay mode and allows access to various device             setup and configuration options. While in the setup, other             keys such as the number keys and navigation keys may perform             alternate functions, and the display may be used to guide             the user through various operations. Pressing this key again             may exit from the setup feature. Audio playback may continue             normally while in the setup feature. If the user presses no             keys for one minute while in the settings feature, overlay             mode and the feature may time out.     -   Rewind, Fast Forward, Slow Play (not shown):         -   Change the playback direction and/or speed of the current             radio or saved content playback.         -   May include frequency compensation         -   Includes the same rules about coming to the start or end of             the content as during normal play and skip functions

In accordance with one or more embodiments, certain external memory device related features can be provided as illustrated by the following examples. When an external memory device is connected, the 3D Radio may take any suitable action:

-   -   When a music CD is inserted, or a flash memory device is         attached that contains music:         -   3D Radio may begin playing the music automatically.         -   The music tracks may be automatically stored into internal             memory if adequate space is available. In the case of a             music CD, the format of the music may be changed (e.g., to             MP3). Any associated information (e.g., artist and title)             may be copied as well or retrieved from another location.         -   The user may be given an option to save the music to             internal memory.         -   The music tracks may be made available to the user for             searching, saving, and playing directly from the device.     -   When a memory device with music information (artist, title, song         signature, etc.) is connected:         -   The information may be automatically copied into internal             memory.         -   The information may be made available for stored or             broadcast music.         -   The user may be given an option to save the data to internal             memory.     -   When a memory device with a 3D Radio software update is         attached:         -   The update may be automatically installed.         -   The user may be given an on-screen option to install the             update.     -   While an external writeable memory device (e.g., flash drive) is         attached:         -   When saving a content item, the user may be given the option             to save the item to the external memory rather than internal             memory         -   The user may be given the option to store all user settings             to the external memory device, and to load user settings             from the external memory device if present

Note in the above when mentioned is made to ignoring, it will be understood that the respective feature can be implemented without such ignoring if desired depending on the context of the usage of the term.

It is to be understood that other embodiments can be utilized and structural changes can be made without departing from the scope of the invention.

The terms radio device, system, mobile device, etc. can be used interchangeably unless the context indicates otherwise to those of ordinary skill in the art.

It should be appreciated that the embodiments therein can be implemented in numerous ways, including as a method, a circuit, a system or a device. For example, processes illustratively described herein can be implemented on computer or processor readable medium such as RAM, CD, DVD, hard drive, or other medium (in one or more locations) that can be executed or processed by a processor or computer to perform the processes.

While the systems and methods described herein have been shown and described with reference to the illustrated embodiments, those of ordinary skill in the art will recognize or be able to ascertain many equivalents to the embodiments described herein by using no more than routine experimentation. Such equivalents are encompassed by the scope of the present disclosure and the appended claims. Accordingly, the systems and methods described herein are not to be limited to the embodiments described herein. 

What is claimed is:
 1. A portable multi-tuner digital radio device comprising options implemented on the device that provide a user of the device with the opportunity to select to enter the device into different operation modes including: off mode wherein one or more tuners continue to receive radio programming and the device continues to compress and store the received audio in its memory, radio paused mode wherein the device is in an on mode and radio output is paused, saving mode wherein during radio play incoming audio data is stored a more permanent memory location, and overlay mode wherein during one or more of the modes, a user feature is initiated that requires a use of a display or buttons of the device or buttons without affecting a current mode.
 2. The device of claim 1 wherein the overlay device is operable during all modes and permits the user to interact with the display or buttons of the device without interrupting or changing the current mode.
 3. The device of claim 1 wherein the device is a car radio.
 4. The device of claim 1 wherein the device is an aftermarket car radio.
 5. The device of claim 1 where in the device includes an phone mode.
 6. The device of claim 1 wherein the device includes a normal play mode.
 7. The device of claim 1 wherein the device includes saved content playback mode wherein output audio is taken from a stored audio file rather than from a radio content buffer. 